Amphenol JT Series Connectors (MIL-DTL-38999 Series II)

LIGHT-WEIGHT, SPACE-SAVING DESIGN

Amphenol’s JT MIL-DTL-38999 series II miniature connectors offer high-density contact arrangements in a small size. They were designed for high-performance requirements, including military and commercial aviation applications. These Amphenol JT MIL-DTL-38999 series II connectors are environmentally-sealed and have a wide operating temperature range. Amphenol’s JT series connectors are intermateable with Souriau and all MIL-DTL-38999 series connectors, and were formerly called MIL-C-38999. See our full list of Amphenol JT MIL-DTL-38999 series II features in the specifications below.

High-Reliability
MIL-DTL-38999 series II - JT style connectors are used in performance aircraft that demand reliable connections in some of the most rigorous environments. The connectors must perform flawlessly under wide temperature ranges, high vibrations, and be resistant to a vast array of contaminants.

Low-Profile Connector Design
JT's require a fraction of the space needed to mate most other high-performance connectors, permitting use in areas that would be impossible for other mating systems.

Light-Weight
Today's aircraft designs require connectors that are very light-weight. Saving weight on the connector systems allows the aircraft to carry more fuel, maximizing its range or payload-carrying capacity.

High-Density Connectors
JT connectors offer up to 128 contacts per connector. Ideally-suited for the demands of today's digital electronics that are used on fly-by wire aircraft, advanced robotics, and critical industrial equipment.

Operates at Extreme Temperatures
These connectors will operate in temperatures from -85°F to +392°F (-65°C to +200°C)

Broad Range of Military and Commercial Accessories
Many military-standard endbells to MIL-C-85049 specifications and a wide array of cable termination styles are available. Straight, 45- and 90-degree endbells come in many styles from low-cost, standard clamp to shielded, environmentally-sealed.

MIL-DTL-38999 Approved
JT's are fully-intermatable and intermountable with all other MIL-DTL-38999 series II connectors.

3.43.2 JAN brand. The United States Government has adopted, and is exercising legitimate control over the certification marks “JAN” and “J”, respectively, to indicate that items so marked or identified are manufactured to, and meet all the requirements of military specification. Accordingly, items acquired to, and meeting all of the criteria specified herein and in applicable specifications shall bear the certification mark “JAN” except that items too small to bear the certification mark “JAN” shall bear the letter “J”. The “JAN” or “J” shall be placed immediately before the PIN except that if such location would place a hardship on the manufacturer in connection with such marking, the “JAN” or “J” may be located on the first line above or below the PIN. Items furnished under contracts or orders which either permit or require deviation from the conditions or requirements specified herein or in applicable specifications shall not bear “JAN” or “J”. In the event an item fails to meet the requirements of this specification and the applicable specification sheets or associated detail specifications, the manufacturer shall remove the “JAN” or the “J” from the sample tested and also from all items represented by the sample. The “JAN” or “J” certification mark shall not be used on products acquired to contractor drawings or specification. The United States Government has obtained Certificate of Registration No. 504,860 for the certification mark “JAN”.

Note: The “JAN” or “J” is not part of the PIN but indicates a certification.

TG70 Strap WrenchThe strap wrench is used to connect or disconnect coupling nuts in a confined space, or to tighten or loosen endbells without damaging the connector plating. A strap wrench also increases torque, allowing you to more easily mate or unmate a connector pair. Substitute tools, such as a pipe wrench or pliers, should never be used because of the high probability of severe damage to the connector plating or the coupling mechanism.

TG69P Non-Marring Adjustable Endbell Pliers for Field Service
The TG69P pliers have resilient jaws and are used to tighten or remove endbells without damaging the connector plating. The pliers are adjustable and will accommodate all of the connector sizes in this catalog. Substitute tools, such as a pipe wrench or metal jaw pliers, should never be used due to the high probability of severe damage to the connector plating. Replacement jaws, part number G77015, are available.

600 Series Production System
The 600 series is a complete system for the proper assembly and torquing of connector endbells. The system includes a bench-mounted or hand-held torque wrench, plug and receptacle holders, and a range of endbell tightening tools. When used together, these tools provide the user with consistent endbell installations. Each item is shipped with detailed assembly instructions.

Designed for use with straight or right angle shrink boots. A knurled rear section with a boot groove provides excellent surface for the boot to grab the metal endbell. Available with lock wire and drain holes. See Heat Shrink Boots.

M85049/33M85049/32

N

Y

SA

Shield Termination Back Shell

Non-environmental designed for use with jacketed cable. Allow extra space to break out the wires and still provide stain relief clamping to the outside of the cable jacket.

M85049/17

Y

Y

S

Extender Back Shell

This EMI/RFI-shielding, environmentally-sealed endbell features a standard-style cable clamp with gland seal at the end of an extender-style backshell.

M85049/29

N

N

S

Extender Back Shell

This EMI/RFI-shielding, non-environmentally-sealed endbell features a standard-style cable clamp.

Banding

M85049/85M85049/86M85049/87

Y

Y

SBA

Banding Adapter

Banding adapters utilize a band of metal that fastens and grounds cable shields to the outside of endbells. This method of terminating shields has advantages in that they typically use tools to tighten and trim the bands. These tools make the termination tight, repeatable, reworkable (if you make a mistake, just cut the band off and start again) and facilitates service. Banding adapters help lower the total applied cost by having simpler designs that have fewer parts with uncomplicated assembly procedures.

Custom

SAB

Custom Designs

Contact us

If the military-standard endbells don’t fit your needs, contact us and we will customize an endbell solution. Most of these customized endbells are typically assembled in 4-8 weeks or sooner!

STEP 4: When contact bottoms, a slight “click” can be heard as tines of metal retaining clip snap into place behind contact shoulder.

STEP 5: Remove tool and pull back lightly on wire to make sure contact is properly seated. Repeat operation with remainder of contacts to be inserted, beginning with the center cavity and working outward in alternating rows.

STEP 6: After all contacts are inserted, fill any empty cavities with wire sealing plugs. Reassemble plug or receptacle hardware.

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